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comparison: netwerk/wifi/nsWifiScannerWin.cpp
netwerk/wifi/nsWifiScannerWin.cpp
- changeset 0
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| -1:000000000000 | 0:0e248ddc1852 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 | |
| 6 #include "windows.h" | |
| 7 #include "wlanapi.h" | |
| 8 | |
| 9 #include "stdlib.h" | |
| 10 | |
| 11 #include "nsWifiMonitor.h" | |
| 12 #include "nsWifiAccessPoint.h" | |
| 13 | |
| 14 #include "nsServiceManagerUtils.h" | |
| 15 #include "nsComponentManagerUtils.h" | |
| 16 #include "nsIMutableArray.h" | |
| 17 | |
| 18 #define DOT11_BSS_TYPE_UNUSED static_cast<DOT11_BSS_TYPE>(0) | |
| 19 | |
| 20 using namespace mozilla; | |
| 21 | |
| 22 nsresult | |
| 23 nsWifiMonitor::DoScan() | |
| 24 { | |
| 25 HINSTANCE wlan_library = LoadLibrary("Wlanapi.dll"); | |
| 26 if (!wlan_library) | |
| 27 return NS_ERROR_NOT_AVAILABLE; | |
| 28 | |
| 29 decltype(::WlanOpenHandle)* WlanOpenHandle = (decltype(::WlanOpenHandle)*) GetProcAddress(wlan_library, "WlanOpenHandle"); | |
| 30 decltype(::WlanEnumInterfaces)* WlanEnumInterfaces = (decltype(::WlanEnumInterfaces)*) GetProcAddress(wlan_library, "WlanEnumInterfaces"); | |
| 31 decltype(::WlanGetNetworkBssList)* WlanGetNetworkBssList = (decltype(::WlanGetNetworkBssList)*) GetProcAddress(wlan_library, "WlanGetNetworkBssList"); | |
| 32 decltype(::WlanFreeMemory)* WlanFreeMemory = (decltype(::WlanFreeMemory)*) GetProcAddress(wlan_library, "WlanFreeMemory"); | |
| 33 decltype(::WlanCloseHandle)* WlanCloseHandle = (decltype(::WlanCloseHandle)*) GetProcAddress(wlan_library, "WlanCloseHandle"); | |
| 34 | |
| 35 if (!WlanOpenHandle || | |
| 36 !WlanEnumInterfaces || | |
| 37 !WlanGetNetworkBssList || | |
| 38 !WlanFreeMemory || | |
| 39 !WlanCloseHandle) | |
| 40 return NS_ERROR_FAILURE; | |
| 41 | |
| 42 // Regularly get the access point data. | |
| 43 | |
| 44 nsCOMArray<nsWifiAccessPoint> lastAccessPoints; | |
| 45 nsCOMArray<nsWifiAccessPoint> accessPoints; | |
| 46 | |
| 47 do { | |
| 48 accessPoints.Clear(); | |
| 49 | |
| 50 // Get the handle to the WLAN API. | |
| 51 DWORD negotiated_version; | |
| 52 HANDLE wlan_handle = nullptr; | |
| 53 // We could be executing on either Windows XP or Windows Vista, so use the | |
| 54 // lower version of the client WLAN API. It seems that the negotiated version | |
| 55 // is the Vista version irrespective of what we pass! | |
| 56 static const int kXpWlanClientVersion = 1; | |
| 57 if ((*WlanOpenHandle)(kXpWlanClientVersion, | |
| 58 nullptr, | |
| 59 &negotiated_version, | |
| 60 &wlan_handle) != ERROR_SUCCESS) { | |
| 61 return NS_ERROR_NOT_AVAILABLE; | |
| 62 } | |
| 63 | |
| 64 // try again later. | |
| 65 if (!wlan_handle) | |
| 66 return NS_ERROR_FAILURE; | |
| 67 | |
| 68 // Get the list of interfaces. WlanEnumInterfaces allocates interface_list. | |
| 69 WLAN_INTERFACE_INFO_LIST *interface_list = nullptr; | |
| 70 if ((*WlanEnumInterfaces)(wlan_handle, nullptr, &interface_list) != ERROR_SUCCESS) { | |
| 71 // try again later | |
| 72 (*WlanCloseHandle)(wlan_handle, nullptr); | |
| 73 return NS_ERROR_FAILURE; | |
| 74 } | |
| 75 | |
| 76 // Go through the list of interfaces and get the data for each. | |
| 77 for (int i = 0; i < static_cast<int>(interface_list->dwNumberOfItems); ++i) { | |
| 78 | |
| 79 WLAN_BSS_LIST *bss_list; | |
| 80 HRESULT rv = (*WlanGetNetworkBssList)(wlan_handle, | |
| 81 &interface_list->InterfaceInfo[i].InterfaceGuid, | |
| 82 nullptr, // Use all SSIDs. | |
| 83 DOT11_BSS_TYPE_UNUSED, | |
| 84 false, // bSecurityEnabled - unused | |
| 85 nullptr, // reserved | |
| 86 &bss_list); | |
| 87 if (rv != ERROR_SUCCESS) { | |
| 88 continue; | |
| 89 } | |
| 90 | |
| 91 for (int j = 0; j < static_cast<int>(bss_list->dwNumberOfItems); ++j) { | |
| 92 | |
| 93 nsWifiAccessPoint* ap = new nsWifiAccessPoint(); | |
| 94 if (!ap) | |
| 95 continue; | |
| 96 | |
| 97 const WLAN_BSS_ENTRY bss_entry = bss_list->wlanBssEntries[j]; | |
| 98 | |
| 99 ap->setMac(bss_entry.dot11Bssid); | |
| 100 ap->setSignal(bss_entry.lRssi); | |
| 101 ap->setSSID((char*) bss_entry.dot11Ssid.ucSSID, | |
| 102 bss_entry.dot11Ssid.uSSIDLength); | |
| 103 | |
| 104 accessPoints.AppendObject(ap); | |
| 105 } | |
| 106 (*WlanFreeMemory)(bss_list); | |
| 107 } | |
| 108 | |
| 109 // Free interface_list. | |
| 110 (*WlanFreeMemory)(interface_list); | |
| 111 | |
| 112 // Close the handle. | |
| 113 (*WlanCloseHandle)(wlan_handle, nullptr); | |
| 114 | |
| 115 | |
| 116 bool accessPointsChanged = !AccessPointsEqual(accessPoints, lastAccessPoints); | |
| 117 ReplaceArray(lastAccessPoints, accessPoints); | |
| 118 | |
| 119 nsresult rv = CallWifiListeners(lastAccessPoints, accessPointsChanged); | |
| 120 NS_ENSURE_SUCCESS(rv, rv); | |
| 121 | |
| 122 // wait for some reasonable amount of time. pref? | |
| 123 LOG(("waiting on monitor\n")); | |
| 124 | |
| 125 ReentrantMonitorAutoEnter mon(mReentrantMonitor); | |
| 126 mon.Wait(PR_SecondsToInterval(60)); | |
| 127 } | |
| 128 while (mKeepGoing); | |
| 129 | |
| 130 return NS_OK; | |
| 131 } |
